Residential districts include the following:
(A) “SA” Suburban Agricultural District;
(B) “R-1” Single-Family Residential District;
(C) “R-2” Two-Family Residential District;
(D) “R-3” Multiple-Family Residential District;
(E) “R-MH” Mobile Home Park Residence District; and
(F) “PR” Planned Residence Overlay District.